The only programs that I use that allow me to split audio between devices is Media player classic and Foobar2000. you can set the playback device on each piece of software.. works on default windows 7 settings too... you just have to set the output playback device in the software settings.
for...
On ebay you can get a new unit shipped from china for $320 complete... from coolfungadget which is a legit distributor of the matrix line
avg shipping time = around 2.5 weeks give or take
the way I ship, it'll cost $20.. but you should have it 3-4 days after it's shipped..
The unit I have is...